Point: In Act 1, Priestley presents Eric as quite an awkward character who lacks confidence, as well as being the antithesis of his father who everytine he tried to stand up to his father he got shut down. Priestley may have done this to serve as a contrast to Mr Birling making the audience feel sympathetic towards him.
“early twenties, not quite at ease, half shy half assertive”
“(Eric suddenly guffaws)”
“yes i know - but still- “ Just let me finish eric.” -> tension between him